Paper Box

ABSTRACT

A paper box. The paper box comprises a first sidewall, a second sidewall, a first bottom board, and a first strip. The first sidewall comprises a first side and a second side. The second side is adjacent to the first side. The second sidewall is connected with the second side and comprises a third side. The third side and the first side are arranged in a row. The first bottom board is connected with the first side. The first strip is connected with the first board. The first strip is not longer than the second side.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The invention relates to a paper box, and in particular, to a paper box with a strip attached to a sidewall thereof for enhanced strength.

2. Description of the Related Art

Conventional material of paper packing boxes is corrugated board. During pallet stacking, sticky tape is wound around the paper box, weakening the corners of the box and pressing the material thereof flat. Accordingly, additional strengthening devices are disposed on the corners of the box, increasing production cost and manufacturing time.

BRIEF SUMMARY OF THE INVENTION

The invention provides a paper box with a strengthening strip, to avoid deformation of the corners thereof.

A paper box comprises a first sidewall, a second sidewall, a first bottom board, and a first strip. The first sidewall comprises a first side and a second side. The second side is adjacent to the first side. The second sidewall is connected with the second side and comprises a third side. The third side and the first side are arranged in a row. The first bottom board is connected with the first side. The first strip is connected with the first board. The length of the first strip is not longer than the second side.

The paper box further comprises a second bottom board connecting with the third side. The paper box further comprises a second strip connecting with the third side adjacent to the first strip and the second bottom board. The first strip and the second strip are respectively attached to the first sidewall and the second sidewall. The paper box further comprises an outer cover, whereby when the first bottom board bends 90° toward the first sidewall and the second bottom board bends 90° toward the second sidewall, the outer cover abuts the first bottom board and the second bottom board. The first strip is substantially L-shaped.

The first strip comprises a rectangular connecting part and a rectangular extending part. The rectangular connecting part is connected with the first side and the rectangular extending part is connected with the rectangular connecting part. The rectangular connecting part and the rectangular extending part are bent and respectively attached to the first sidewall and the second sidewall. The second bottom board comprises a fourth side, connecting to and substantially perpendicular to the third side.

The fourth side is longer than the width of the rectangular connecting part. The second bottom board further comprises a fifth side, connecting to and substantially perpendicular to the fourth side. The fifth side is shorter than the width of the first bottom board.

The paper box further comprises a plurality of the top boards. The top boards are respectively connected with an opposite side of the first side of the first sidewall and an opposite side of the third side of the second sidewall.

A detailed description is given in the following embodiments with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention can be more fully understood by reading the subsequent detailed description and examples with references made to the accompanying drawings, wherein:

FIG. 1A is a schematic view of a first embodiment of a paper box unfolded;

FIG. 1B is a schematic view of assembly of the paper box in FIG. 1A;

FIG. 1C is a schematic view of the paper box in FIG. 1B assembled.

FIG. 2A is a schematic view of a second embodiment of a paper box unfolded; and

FIG. 2B is a schematic view of the paper box in FIG. 2A assembled.

DETAILED DESCRIPTION OF THE INVENTION

The following description is of the best-contemplated mode of carrying out the invention. This description is made for the purpose of illustrating the general principles of the invention and should not be taken in a limiting sense. The scope of the invention is best determined by reference to the appended claims.

First embodiment

Referring to FIG. 1A, a first embodiment of a paper box 1 comprises two first sidewalls 2 a, two second sidewalls 2 b, an attachable part 2 c, four first strips 31 a, four second strips 31 b, two first bottom boards 32 a, two second bottom boards 32 b, four top boards 4, and an outer cover 5. First strip 31 a is disposed on the first sidewall 2 a the same as the second strip 32 b is disposed on the second sidewall 2 b. Thus, only one first sidewall 2 a and second sidewall 2 b are discussed here.

Referring again to FIG. 1A, the first sidewall 2 a comprises a first side E₁ and a second side E₂. The second side E₂ is adjacent to first side E₁. The second sidewall 2 b is connected with the second side E₂, and comprises a third side E₃. The third side E₃ and the first side E₁ are disposed in a straight line. The first bottom board 32 a is connected with a first side E₁ and the second bottom board 32 b is connected with a third side E₃. Furthermore, the first strip 31 a is connected with the first side E₁. The second strip 31 b is connected with the third side E₃ and is adjacent to the first strip 31 a and the second bottom board 32 b.

Substantially, each first strip 31 a and each second strip 31 b are rectangular, cut from each side of the first bottom board 32 a and the second bottom board 32 b. The first strips 31 a and the second strips 31 b are bent toward interior of the first sidewalls 2 a and the second sidewalls 2 b and are attached tightly to area A of the first sidewalls 2 a and area B of the second sidewalls 2 b (the area surrounded by the dotted line, as shown in FIG. 1A), to enhance strength of the corner structure of the paper box. Furthermore, the top boards 4 are respectively connected with the opposite side of the first side E₁ and the opposite side of the third side E₃.

When the paper box 1 is assembled, the attachable part 2 c at the left side of FIG. 1A is attached to the first sidewall 2 a at the right side of FIG. 1A. Then, the first strips 31 a and the second strips 31 b are respectively attached to the first sidewalls 2 a and the second sidewalls 2 b. Moreover, each first bottom board 32 a and each second bottom board 32 b are bent 90° toward interior of the paper box and combined, as shown in FIG. 1B (FIG. 1B only depicts two first bottom boards 32 a for brevity). Finally, four top boards 4 are combined and paper box 1 is assembled, as shown in FIG. 1C. However, due to the first strips 31 a and the second strips 31 b, assembled paper box has an opening O. Thus, the paper box 1 further comprises an outer cover 5, abutting the first bottom boards 32 a and the second bottom boards 32 b to fully cover the opening O.

In the embodiment, the first strips 31 a and the second strips 31 b are bent and attached to the first sidewalls 2 a and the second sidewalls 2 b, to enhance strength of the corner structure of the paper box 1. Thus, even if the pressure pressed on the corner of the paper box 1 is increased, corrugated boards can be prevented from deforming during packaging.

For clarification, the positions of first sidewalls 2 a and second sidewalls 2 b are reversed in FIG. 1B and FIG. 1C.

Note that the area of first sidewalls 2 a and the second sidewalls 2 b is not limited to those shown in FIG. 1A and FIG. 1B, and can be the same. The length and the width of the top boards 4, the first bottom boards 32 a and the second bottom boards 32 b depend on the area first sidewalls 2 a and the second sidewalls 2 b.

Note that the first strips 31 a and the second strips 31 b arm not limited to disposition as shown in FIG. 1A and FIG. 1C, and can be integrally connected.

Second Embodiment

Referring to FIG. 2A, a second embodiment of a paper box 1′ differs from the previous embodiment only in first strips 31′, the first bottom boards 32′a and the second bottom boards 32′b. Other like elements are labeled as the same and not discussed here, for brevity.

The paper box 1′ comprises four first strips 31′, two first bottom boards 32′a and two second bottom boards 32′b. Each first strip 31′ is substantially L-shaped. The first strip comprises a rectangular connecting part 31′a and a rectangular extending part 31′b. Each rectangular connecting part 31′a is connected with the first side E₁ of the first sidewall 2 a. The second bottom board 32′b comprises a fourth side E₄ and a fifth side E₅. The fourth side E₄ is connected with the third side E₃ and is substantially perpendicular to the third side E₃. The fourth side E₄ is longer than the width W of the rectangular extending part 31′b. The fifth side E₅ is connected with the fourth side E₄ and is substantially perpendicular to the fourth side E₄. The fifth side E₅ is shorter than the width Wb of the second bottom board 32′b.

When the paper box 1′ is assembled, the first sidewall 2 a at the right side of FIG. 2A is combined with the second sidewalls at the left side of FIG. 2A by the attachable part 2 c. The rectangular connecting part 31′a and the rectangular extending part 31′b of each first strip 31′ are bent and attached to the first sidewalls 2 a and the second sidewalls 2 b. Furthermore, each first bottom board 32′a and each second bottom board 32′b are bent 90° toward interior of the paper box 1′ and are combined, as shown in FIG. 2B, and then the paper box 1′ is assembled.

Note that the fourth side E₄ is longer than the width of the rectangular connecting part 31′b, and the fifth side E₅ is shorter than the width of the second bottom board 32′b, so that the bottom of the paper box 1′ does not have an opening.

Note that the rectangular extending part 31′b is not limited to being adjacent to the second bottom board 32′b, but can be adjacent to the first bottom board 32′a.

Substantially, the rectangular connecting part 31′a and the rectangular extending part 31′b of the first strip 31′ are bent and attached to the first sidewall 2 a and the second sidewall 2 b, to enhance strength of the corner structure of the paper box 1′. Thus, even if the pressure on the corner of the paper box 1 is increased, packaging material is protected from deformation during packaging. Furthermore, the opening is avoided because of the limitation first strip 31′ and the second bottom board 32′b. Thus, additional outer covering is not required.

While the invention has been described by way of example and in terms of preferred embodiment, it is to be understood that the invention is not limited thereto. To the contrary, it is intended to cover various modifications and similar arrangements (as would be apparent to those skilled in the art). Therefore, the scope of the appended claims should be accorded the broadest interpretation so as to encompass all such modifications and similar arrangements. 

1. A paper box comprising: a first sidewall comprising a first side and a second side, wherein the second side is adjacent to the first side; a second sidewall connecting with the second side and comprising a third side, wherein the third side and the first side are arranged in a row; a first bottom board connecting with the first side; and a first strip connecting with the first board, wherein the first strip is not longer than the second side.
 2. The paper box as claimed in claim 1, further comprising a second bottom board connecting with the third side.
 3. The paper box as claimed in claim 2, further comprising a second strip connecting with the third side, wherein the second lone board is adjacent to the first strip and the second bottom board.
 4. The paper box as claimed in claim 3, wherein the first strip and the second strip are respectively attached to the first sidewall and the second sidewall.
 5. The paper box as claimed in claim 4, further comprising an outer cover, wherein when the first bottom board bends 90° toward the first sidewall and the second bottom board bends 90° toward the second sidewall, and the outer cover abuts the first bottom board and the second bottom board.
 6. The paper box as claimed in claim 2, wherein the first strip is substantially L-shaped.
 7. The paper box as claimed in claim 6, wherein the first strip comprises a rectangular connecting part and a rectangular extending part, the rectangular connecting part connected with the first side and the rectangular extending part connected with the rectangular connecting part.
 8. The paper box as claimed in claim 7, wherein the rectangular connecting part and the rectangular extending part are bent and respectively attached to the first sidewall and the second sidewall.
 9. The paper box as claimed in claim 8, wherein the second bottom board comprises a fourth side, connecting to and substantially perpendicular to the third side.
 10. The paper box as claimed in claim 9, wherein the fourth side is longer than the width of the rectangular connecting part.
 11. The paper box as claimed in claim 10, wherein the second bottom board further comprises a fifth side, connecting to and substantially perpendicular to the fourth side.
 12. The paper box as claimed in claim 11, wherein the fifth side is shorter than the width of the first bottom board.
 13. The paper box as claimed in claim 2, further comprising a plurality of top boards, respectively connecting with an opposite side of the first side of the first sidewall and an opposite side of the third side of the second sidewall. 